YSLYSY Cable: Steel Wire Braided PVC Control Cable 300/500V
YSLYSY cable is a 300/500V PVC control cable with numbered cores, a grey PVC inner sheath, a galvanised steel wire braid and a transparent PVC outer sheath, used on machine tools, conveyors and production lines where the cable needs mechanical protection.
- Rated voltage300/500 V
- ConductorClass 5 flexible bare copper
- BraidGalvanised steel wire
- SheathsGrey PVC inner / clear PVC
- Core identificationBlack, white numbers + G/Y
- Typical sizes0.75 to 2.5 mm²
- Temperature (flexing)-5 °C to +70 °C
- Min. bending radius20 × outer diameter
YSLYSY is a multicore PVC control and signal cable with a steel wire braid, used for industrial equipment, control cabinets and automation wiring where the cable is exposed to knocks, crushing or abrasion. The designation lists the layers from the inside out: Y for PVC core insulation, SL for control cable (Steuerleitung), Y for the PVC inner sheath, S for the galvanised steel wire braid and Y for the PVC outer sheath.
The same construction is sold in the UK and many export markets as SY cable. It is rated 300/500 V, uses Class 5 flexible copper and black numbered cores with a green/yellow earth, and has a transparent outer sheath through which the braid stays visible. The braid gives mechanical protection and some shielding effect but is not a copper EMC screen, so the exact cable schedule should be confirmed before production.
Browse the PVC Control & Data Cable category for related cables.
Application & Features
Selection overview
YSLYSY is chosen where an ordinary PVC control cable would be damaged: on machine tools where swarf, tools and workpieces can strike the cable, along conveyors and assembly lines, in plant engineering, and on control equipment installed in walkways or other exposed positions. The steel braid spreads impact and crushing loads and resists cuts, while the inner sheath keeps the braid off the cores.
The cable suits fixed installation and free movement without tensile stress or forced guidance, in dry, damp and wet indoor areas; outdoors it needs protection from UV. It is not a drag-chain cable. Confirm EMC termination and whether the cable is suitable for continuous movement before ordering. YSLYSY is a control cable; for the data bus that often runs alongside it, see choosing a cable for Modbus RTU and other RS-485 buses.
- Mechanical protectionGalvanised steel wire braid between two PVC sheaths protects the cores from impact and abrasion.
- Machine tools and conveyorsControl and supply wiring for machine tools, conveyors, assembly lines and plant equipment.
- Visible braidTransparent outer sheath lets the braid be inspected along the run.
- Numbered coresBlack cores with white numbers and a green/yellow earth from three cores.
Specifications
Technical data
Typical values for YSLYSY constructions. The final construction is confirmed on the TEBAOFLEX datasheet issued with your quotation.
Electrical, mechanical and material data
| Parameter | Value |
|---|---|
| Designation | Y-SL-Y-S-Y: PVC insulation, control cable, PVC inner sheath, steel wire braid, PVC outer sheath |
| Also known as | SY control cable |
| Rated voltage | 300/500 V |
| Conductor | Bare copper, fine-stranded, IEC 60228 Class 5 |
| Core insulation | PVC compound type TI2 (EN 50363-3) |
| Core identification | Black with white numbers; with green/yellow earth from 3 cores (JZ) or without (OZ) |
| Inner sheath | PVC compound type TM2 (EN 50363-4-1), grey |
| Braid | Galvanised steel wire braid |
| Outer sheath | PVC compound type TM2 (EN 50363-4-1), transparent |
| Temperature, flexing | -5 °C to +70 °C |
| Temperature, fixed installation | -15 °C to +70 °C |
| Minimum bending radius, flexing | 20 × outer diameter |
| Environment | Dry, damp and wet indoor areas; outdoors only with UV protection |
| Movement | Free movement without tensile stress or forced guidance; not for drag chains |
YSLYSY typical constructions
| Cores × size | Max. conductor resistance at 20 °C | Approx. outer diameter | Approx. weight |
|---|---|---|---|
| 3 × 0.75 mm² | 26.0 Ω/km | 7.6 mm | 88 kg/km |
| 4 × 0.75 mm² | 26.0 Ω/km | 8.2 mm | 100 kg/km |
| 7 × 0.75 mm² | 26.0 Ω/km | 9.5 mm | 135 kg/km |
| 12 × 0.75 mm² | 26.0 Ω/km | 11.9 mm | 220 kg/km |
| 3 × 1.0 mm² | 19.5 Ω/km | 8.2 mm | 99 kg/km |
| 4 × 1.0 mm² | 19.5 Ω/km | 8.8 mm | 120 kg/km |
| 7 × 1.0 mm² | 19.5 Ω/km | 10.1 mm | 165 kg/km |
| 12 × 1.0 mm² | 19.5 Ω/km | 12.9 mm | 275 kg/km |
| 3 × 1.5 mm² | 13.3 Ω/km | 8.7 mm | 130 kg/km |
| 4 × 1.5 mm² | 13.3 Ω/km | 9.4 mm | 160 kg/km |
| 7 × 1.5 mm² | 13.3 Ω/km | 11.1 mm | 200 kg/km |
| 4 × 2.5 mm² | 7.98 Ω/km | 10.9 mm | 225 kg/km |
Selection note: before ordering, ask our engineers to confirm the core count and cross-section, the braid coverage and how the braid will be earthed at the glands, the voltage marking, the temperature range and bending radius for fixed or moving installation, and whether the cable must handle continuous movement. Outer diameter and weight in the table are approximate.
Standards & References
Applicable standards and compliance
- Design referenceBuilt with reference to EN 50525-2-51 (VDE 0285-525-2-51) for PVC control cables, with an added steel wire braid and outer sheath.
- Conductor referenceBare copper conductors to IEC 60228 Class 5.
- MaterialsPVC insulation type TI2 to EN 50363-3; inner and outer sheaths type TM2 to EN 50363-4-1.
- Voltage scopeRated 300/500 V for control and supply circuits of machinery.
- ApprovalsFlame-test reports (IEC 60332-1-2), EMC requirements and regulatory marking are confirmed and quoted per order.
Construction
Material and build-up
YSLYSY is a numbered-core PVC control cable with an extra protection layer. A PVC inner sheath is extruded over the stranded cores, a galvanised steel wire braid is applied over it, and a transparent PVC outer sheath closes the cable.
- Conductor: fine-stranded bare copper, IEC 60228 Class 5.
- Insulation: PVC (TI2); black cores with white numbers and a green/yellow earth from three cores.
- Layup: cores stranded together in layers.
- Inner sheath: grey PVC (TM2) bedding that keeps the steel wires away from the cores.
- Braid: galvanised steel wire braid against impact, crushing and abrasion; the zinc coating limits corrosion.
- Outer sheath: transparent PVC (TM2), so damage to the braid can be seen during inspection.
FAQ
Selection questions
What does YSLYSY mean?
Read the letters from the inside out: Y is PVC core insulation, SL means control cable (Steuerleitung), Y is a PVC inner sheath, S is a steel wire braid and the last Y is the PVC outer sheath. UK and many export catalogues call the same build SY cable.
Is YSLYSY a screened cable?
Its steel braid gives some shielding effect, but its main job is mechanical protection. Where the circuit needs a proper EMC screen, choose a copper-braided construction such as YSLYCY or, for small signal cores, LiYCY screened control cable.
YSLYSY or YY: when is the braid worth it?
Use YY control cable inside cabinets, ducts and other protected routes. Choose YSLYSY when the cable is exposed on a machine or conveyor, can be struck or crushed, or runs where it could be damaged during maintenance. The braid adds diameter and weight, as the table above shows.
Can YSLYSY be used in a drag chain?
No. It is designed for fixed installation and free movement without tensile stress or forced guidance. Continuous drag-chain or robot movement needs a cable built for that duty; send us the travel, speed and cycle count and we will propose one.
What should I send for a quotation?
Send the core count and cross-section, with or without green/yellow earth, the length or drum lengths, the installation method and environment, the motion duty, how the braid will be earthed, and the standards or markings required.
Request this cable.
Send the core count, cross-section, length, installation method, environment, motion duty and required standards.
Quality Assurance
Testing at every stage in our own workshop and laboratory, from incoming copper to the packed drum.
Raw Material Inspection
Every batch of copper rod, rubber compound and reinforcing material is checked before it reaches the line.
- Copper: conductor resistance, elongation and surface condition on incoming rod and drawn wire
- EPR, CPE, PUR and silicone compounds: hardness, tensile strength, elongation and ageing samples from each mix
- Suppliers and batch numbers are recorded so every drum can be traced back to its materials
Manufacturing Process Control
Stranding, insulation extrusion, core assembly and sheathing run under recorded process parameters.
- Class 5/6 stranding with lay length and tension monitored for trailing and reeling flexibility
- Continuous-vulcanisation extrusion with wall thickness and spark tests logged on every length
- Operators sign off each stage before the cable moves to the next machine
Electrical Testing
Finished lengths go through the routine tests required by the referenced VDE, ICEA, IEC or NEK standard.
- Conductor resistance and insulation resistance on every length
- Voltage withstand (3.5 kV and higher) and partial-discharge measurement in the shielded HV laboratory
- Screen and pilot-core continuity checks for mining and reeling constructions
Mechanical and Ageing Tests
Samples from production are tested for the duty a mining, crane or submersible cable will actually see.
- Tensile strength and elongation of insulation and sheath before and after ageing
- Hot-set, ozone, oil-immersion and low-temperature bending tests
- Constant-temperature water bath for insulation resistance of submersible constructions
Flame Test and Final Inspection
Before packing, the cable is checked against the order and the flame-performance requirement of its standard.
- Single-cable vertical flame test to IEC 60332-1-2 where specified
- Metre marking, printing, drum length and appearance inspection
- Test report and packing list issued with every shipment
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